SNS Vulnerability

Phorum "admin.php" Cross-Site Scripting Vulnerability

Description

Stefan Schurtz has discovered a vulnerability in Phorum, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input appended to the URL after admin.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
This may be related to:
SA24396
The vulnerability is confirmed in version 5.2.18. Other versions may also be affected.

Vulnerable Products

Vulnerable Software:
Phorum 5.x

Solution

Edit the source code to ensure that input is properly sanitised.

CVE

CVE-2011-4561

References

SSCHADV2011-023:
http://www.rul3z.de/advisories/SSCHADV2011-023.txt

Vulnerability Manager Detection

IPS Protection

ASQ Engine alarm	Available Since
XSS - Prevention - GET : suspicious 'iframe' tag found in URL	3.2.0
XSS - Prevention - GET : suspicious 'meta' tag found in URL	3.2.0
XSS - Prevention - GET : suspicious tag with event found in URL	3.2.0
XSS - Prevention - GET : suspicious 'applet' tag found in URL	3.2.0
XSS - Phishing : suspicious 'div' tag found in URL	3.2.0
XSS - Prevention - GET : suspicious 'style' attribute found in URL	3.2.0
XSS - Prevention - GET : suspicious 'img' tag found in URL	3.2.0
XSS - Phishing : suspicious 'a' tag found in URL	3.2.0
XSS - Prevention - GET : cookie access attempt using script language found in URL	3.2.0
XSS - Prevention - GET : suspicious 'embed' tag found in URL	3.2.0
XSS - Prevention - GET : suspicious 'object' tag found in URL	3.2.0
XSS - Phishing : suspicious 'form' tag found in URL	3.2.0
XSS - Prevention - GET : javascript code found in URL	3.2.0
XSS - Prevention - GET : evasion attempt using tag characters encoding in URL	3.2.0
XSS - Prevention - GET : suspicious 'style' tag found in URL	3.2.0
XSS - Phishing : suspicious 'link' tag found in URL	3.2.0
XSS - Prevention - GET : 'script' tag found in URL	3.2.0
XSS - Prevention - GET : 'location' javascript object found in URL	3.2.0
XSS - Prevention - GET : suspicious 'div' tag found in URL	3.2.0

Risk level

Low

Vulnerability First Public Report Date

2011-10-04

Target Type

Server

Possible exploit

Remote